{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6901",
    "entityType": "User",
    "nonce": "0xd7ce6d2446724298b46d79062e616048fb8a1de99bd533b6afae505a80123659",
    "signature": "0xd721ebbd155bfec53acc7c07be6e8044b7e66640d04d157284c90025826ad3635aab8799141e9b2eccb9b8c4098bb4ae7cc92faea1e16c58f5d34220c93c81c41b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}