{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323361833",
    "entityType": "User",
    "nonce": "0xb7b4e89578b6e43d808994ee6c6f574f84067495b85039a733f7a6889aa0ddd4",
    "signature": "0xae2678202d4fbb1011ee992f22fba10b2e874d6142f6424d6dacf9157323d135706c8a320eb6a40691b5578ad794cd915f63763cba2249350d289223b16604091b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}