{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "853591809",
    "entityType": "User",
    "nonce": "0x89ebee00b9d3d1278cefaecfe8174e3c618bfb6c3e0e2696e798e15e82538b8c",
    "signature": "0x756fde67d83bb914e581745c8dabed7ca163f1ccfe41f76c264c5b37a2cd5c233a7b4ac5d1ac6b6c2cd33b17bb10a0ea4ea0b36960855df91fdfccde3e775aff1b",
    "signer": "0xD471164adA121A85a72a357f51C55A54cbcBb458",
    "userId": "155792"
  }
}