{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf45b6b97effd8e87a0fe9b75c0e2e1dba73f40b324ec7994e948b5c32b0b1cdc",
    "signature": "0x7e32a5b00682fcc9e36452b43176366b5d07dcdae5acc1e6a34ee2a941d90c6c11f1c6285e7d89eb5e2cd3d804d2ae1159aa57403ba7ce6cc7d8ced825d87b991b",
    "signer": "0xF0Ce74234a82af7CD828f6f3cB69D1c5E8c26620",
    "userId": "183915544"
  }
}