{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57331",
    "entityType": "User",
    "nonce": "0x6d2b4fa4089a17481ce2744e2ccc85ca27b37ca518b2064441238ef106e1b499",
    "signature": "0x9bdb9bd3cbd58e0780b6c614da55853663f8dfac96e41dcb8a2e41f98475c7817f520e5af6013dcbbcfb86e358df1982fc09a1a3a3f6df213bc9137dfdb582f91b",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}