{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3e43737d4bfd6722133fb40c59bbed6f0ff19909237fa2c9c19f267e221f1cb8",
    "signature": "0x01adbf0a720973ae590adae1a30e874e13d9d4ee0b20f3945f4c71b4bbe1cf7a24be10bcc82d3ef21ed737d847f424fdc8a924d406bf203a28d6d2a00e41f70b1c",
    "signer": "0x71902B2c11a4EfDe377b4A89a7E2EcFB078581b8",
    "userId": "918019449"
  }
}