{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "916107216",
    "entityType": "User",
    "nonce": "0xb5daf87aace44af8abb8ced5c626a222ba26c7b6334d2534c3d30f91d3b10542",
    "signature": "0x3870e6137a0de4337c135af95f24024a2c6ae87cfe760e43414fa933aa3956285d92a35de832f8c065b21ba6db0bfa87e1497f4873622151346f6e0fbe0277e61c",
    "signer": "0xc876F505cb8a680D38792C141903C53780bc3901",
    "userId": "384345140"
  }
}