{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9b3ad41c6bc751637f61b1b45e14b8bbdc9b1a3a65b06b01c576ad3d87b229e0",
    "signature": "0x424284a4efa3e7d42845443d36ade46c24886a34299bee6fdd3cea4d1463b04c382276aec29d53a02d3b66db4972747a48fdaf671c6427b2fed2202fb94b5c261b",
    "signer": "0x700192Ed1eAF4C3D6E049F3b29D1ce21365e61A6",
    "userId": "980397349"
  }
}