{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x348e507bde9947041486ec7df1c41848c6a37bdfa0188c3cc29d8813b1db97b0",
    "signature": "0xbcb67240a7d3f9f066e66616870caae3044b6c23add79baa390c16c38a13fa8c1bf6180057e824341a2e0458e56b61376e12ad158cd97ba1b7e6bcac94df267f1b",
    "signer": "0xE20f4D023f35d633fC1DB853C354425e14D1a4aD",
    "userId": "112185621"
  }
}