{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xbc37c048c64381c3b90052571e8f9390376fb9538414ab1d513913a2a84fd0c1",
    "signature": "0xb409e75e8d8b56d626838c464e33b9ea5247874157fd4a779ec44bce0b89f7b024674d4739dde87a7d62fe1cc3c46c8119afe879c5ab51ded00df9c59e3203531b",
    "signer": "0x2A5FAa19C84dAdAC2355a17b2c6E12Aa3c0014A7",
    "userId": "216889217"
  }
}