{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0x25958748ced498b6f353d185da97dacd1a815b5a149a7704e6496b63d6a26c00",
    "signature": "0xd5d86d14debd521eb37a1b02f1cfe3834c8ccb55ac8756b9738c756b5ce0479a0bf09faedf9a9cdd5e23cb67987d629e8f47732a10d1f71b038f670bd5c9aa401b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}