{
  "manageEntity": {
    "action": "Update",
    "entityId": "541604521",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera3cvsczsqxhd222zvykjtmpocazhxodjaml5cchemsp6e7s2qyhfa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1745785604},{\"type\":\"playlist\",\"playlist_id\":1637921486},{\"type\":\"playlist\",\"playlist_id\":971391981},{\"type\":\"playlist\",\"playlist_id\":1413549811}]}}}",
    "nonce": "0xa01a8fded06c4e97e61d92e2166122a8fcdc4a3f991c6663817483dc06ab91b2",
    "signature": "0xba5769ac1ded0fa507e19e7973aec779b1ca611ca54073c87743dc67826b0327092548aeff859bd0717c46b142aede3bbc6df0c0a745ce6b60272870dd7cfc571c",
    "signer": "0x6665D53464AE49523fE036B3620715F3181ef405",
    "userId": "541604521"
  }
}