{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x7ee0211400a7284ea511a2acda7ea8d5034544be5b9648f9950e174800b4a3c9",
    "signature": "0xaa3bb60a0f3d6c0e6548cc2d2bad2d04ea8675767e85a8916e673fde21a00ca63070654ee66ab8e404a24042bd74172de3e6cac8cefded77d967a0552af15ab71c",
    "signer": "0x9389EeeadB96012E95139B302a0B50BF7fD75D55",
    "userId": "421654712"
  }
}