{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9c4a3c7385e207601c3d5c5da0b64c28b088a93ae8dd597b273bb762922896e5",
    "signature": "0xd7f38f323a7a01afbb098ebd947fc79c34496b9f8e6b2b9fc9b7ee0e581bdd7936acf98efbcbbb408c4f3813292ff2d813d5d39d2a12b8d31617cccebede7b901b",
    "signer": "0xdD03ED106abBEF4982159500e32B8602B985a69B",
    "userId": "444965341"
  }
}