{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "874277249",
    "entityType": "User",
    "nonce": "0x8d3879c104c5876cafc607ebe5ab5e52fcdec201a43ddb53681096d5811f87c7",
    "signature": "0xf4635b68ad50ad54459ea85a04c3106ddac0e934f8a5ec20b331c5eb82a5287f42bbde9f7531f7623056f25714466fb76540421f6f36bb968005531d5451b5851b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}