{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1413574",
    "entityType": "User",
    "nonce": "0x54f64eabc2e01c7d4f1e3803018def345ea5b71f61db63e9f32a3c4afc7bcb61",
    "signature": "0x426c2aa4c9113ed77257034b78f477832e14ace4c3597933abf519cc68375861136d87d9224cbce97820759a90f860b3e49bf88dcd76346db809241697fd7a561b",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}