{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18122",
    "entityType": "User",
    "nonce": "0x6d509895b61336f1ed98bfd11983fce0b7a07d2de9864c565e2b3f34b2a0f200",
    "signature": "0xdc7a8dbf9b6b097e3327efe1ab0d83a12cf06065424132a2722afc8281cb775e5163bf5bf8989784bd53977be8cdc66ab347ddf2f0713610c0ac8d61402f24fe1b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}