{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "45492762",
    "entityType": "User",
    "nonce": "0xafc9185aa7fc0ffcf73d3d7d0cf0ca5f1d3ecaecc87565d3b94e6e1724b1da73",
    "signature": "0xc9e2a8e9d06e8ece74e8a290e94438f51e8b1b11cd714a2ca77f968fad5ec80544bf31b9d6f937ff37bfd2432d2eb9ded7db7be5bc5b3d2440782316c87e0fe71c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}