{
  "manageEntity": {
    "action": "Update",
    "entityId": "740342642",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x73e22bddd2bc81eb0f4108cd1fc77f125907bc914a80f1d07e92485a1056a639",
    "signature": "0xf6dc213539ccb3f1b59a8efcbc711483732074eb2ceda1ef08b90010afbbf6236634c6ad69e07d0c42fe3809e7d4f5ee6d95a2e710d73c5b238821a6036336211c",
    "signer": "0x0CB86F83704E40b1378D3f3b931BcD1B5c8ceCA1",
    "userId": "740342642"
  }
}