{
  "manageEntity": {
    "action": "Update",
    "entityId": "785201",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb74cfbad49f8b540a6a07abed161b3a8e4630e207668cb1d25b359452a2f0677",
    "signature": "0xbbefcfa17f4fce5ccea5befab9acf3c2a630ea2567b3dffa3f5443b2e650942d1ce3ad166c5bd1448995c7105b0a76470bf9389ed6bd3fbbcc478e41ab827b751c",
    "signer": "0x7C3854df2708D5dc9d22bA310Bc0f73C074f0321",
    "userId": "785201"
  }
}