{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "590824166",
    "entityType": "User",
    "nonce": "0x0cf7f0295b58ec9df0ef46a73df13bc080d1eac23240fd9cf238e1b9aa05d0bf",
    "signature": "0xf36806507a10f155946ecc10ebab168c5c04a8e5daf591a0f37ec2762e0a3ad2391190624ffa6628250fc05875cac1ff26f4b96b889deaa804ad55866a0dad061b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}