{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0x937b837aa779965e7a7ad3b9600e595e8ed872d2616c6a36b72a7f32cc398d08",
    "signature": "0x00b888f78e43989722a0f976c64584cf9752c1111859b83792de55467aa743571c20bdcdb4f72bf70a93f316f8a335af41abf9fa68d19c8951b8eaefecc4a87b1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}