{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "862983276",
    "entityType": "User",
    "nonce": "0xccb38e214027e4b6b3953465b2177444a872e709630bc42258bad9634751854d",
    "signature": "0x67b3600e587e5a387947da12349edf72900673fe9625232045f79c38381640d03c696060636d330669f83ecc050278edf62b3dc3006e93ae8253bf00c26aeba21b",
    "signer": "0x8881F6444f88F6FEBd6dd703AcC9AcdFDFaFFBB9",
    "userId": "589290654"
  }
}