{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580681519",
    "entityType": "User",
    "nonce": "0x1eed364579ab2bcdebe8115268ec1395b5eea6afedc12f446303492f19acf07a",
    "signature": "0x07cb6cb3c362adb0b13211203218f54a2d3e2b8338a596ad511d80f07be1f1a22a0486eaffeae3c58c4f4da6e9f34903086b80ca81b2c537695fcbb871267d8a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}