{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618656",
    "entityType": "User",
    "nonce": "0xb1d28a2643eb93aa33659d9d29b9cddc3b64492d4ce77fced54b820bed210fc3",
    "signature": "0xa71b02e80e9d2a9a010840229c3b6ab4405f12d46c246b145be7bfee1f3a14085927fab8d7ffcd8606bcf0e6a5a0963b4c76ebb5b699284f50fed11ba54ec1761c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}