{
  "manageEntity": {
    "action": "Update",
    "entityId": "972607430",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraqo3xszan4a7dohrm4c7fbhclcrgsrod5vsxmslammcv7t65mvpeq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1278597237}]}}}",
    "nonce": "0x57100882781d0ecf53513bf03c9e3a3790106684d079a315f7afb9e33e951d5a",
    "signature": "0x7e37ce9d5978c7ebff36732aa639b255da8a0d102d293eee13cf6fc55a21fc183e8b30374c47c18892ec51321c52b81f08f993b304ad73b8979b5d8bb69fe4091c",
    "signer": "0x3cEaC29f6b321910F405b2ADbFFdF6cbf4971bc6",
    "userId": "972607430"
  }
}