{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9d7e028162c7017e328879cafbb15630b308fb5b9ec6c5ab3d7f461dc6878986",
    "signature": "0x81735bd052856b656f7ccc6e27a5ee277253c293d596000805eae4f624ce673a547b1cd037452f876b57a72f1a69a7d875589bf3419f027aeff3c35920ac4ef91b",
    "signer": "0xdBc715E40eD90b7e6cAB709B5e73c73E30faBAB0",
    "userId": "988999702"
  }
}