{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4680",
    "entityType": "User",
    "nonce": "0xf12cfc9469aa386c770089b741bb501e1020431f6a789c528fc382c046f55da4",
    "signature": "0x763a5e9976f6985776cdf230447e1e4e85bb93fbe070c82044c5172e3ba6d1d3040c090a8051b786b395326a235408bcd365347312ebad8d70d07b524dbe71b01b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}