{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66769284",
    "entityType": "User",
    "nonce": "0x4336e05a97bd5a07df5af95271869492739529074529c1aae8cdd38cebeaf5a2",
    "signature": "0xd9dc9257a2fc372164c8d343795778566d5a85f2a2cc13805380e617de51e4da6e188e0416222d03117b78fbbfd7cd9d6c8601a7dd3167a3d6960e035af953681c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}