{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x6ae803cd3ef35f543242e67d85c727cb786909ecb8f1cf2239dc1fcb51afa6be",
    "signature": "0x3dd9ddf8f21cb6cfc65493534d49ff634bc6b680b73de3ec1ac545a941f21d5f7280767eb26e95c64b1b10498700683b95dc7a6c7034ca084530830983f0fad51c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}