{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xcd25353067788bcfa9ac0047128c6db21ac63d8d1de21cea675515b1fcdaa556",
    "signature": "0x06000999500d1974ed2ff18a75386ec874b9021f6ebd4890c3ce7dc02af0e897216282526be92b2ec9b6ddcd2c25df315fea422743033b50e3bd8ff262dc82ca1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}