{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "767848396",
    "entityType": "User",
    "nonce": "0xd612cd21bd7044772711580c232746a879da41f891c977e5375891c08ab44cc3",
    "signature": "0x4c6aa589fab5fd7dc7b5f990e0e4b4a7df64fd17e7cb5f4635bfac954c4827db50ad352a7996ddcee59c01de71d1a6a69d4c56a0587593504336f62a69d4f8001b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}