{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1476",
    "entityType": "User",
    "nonce": "0x890679f2ad593b033753365aeaf37e2e764b6e99a3e1f49598374228f7c42f6c",
    "signature": "0x61f7a232a52c90e29853c2e2e7c7c2205278686c850914a2b0211b0d46f503021dde711fbeff1f3f689c337e92f936b45841d4ce077676a95bf7b1ca6963e90b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}