{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0x39da01175bbbe34c8a75d1b276628b66562c0a34496b51f73258bf8aacf35c8f",
    "signature": "0x82d1fa8e31e66fb24d62725a11116431979bea633b1500131bb4694fbe9fd88064aaa6d3ba99fab66d31affbcfcdfe339a4fa59569956d962de6422755d081801c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}