{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0xe523a5d9f34f9d08a3e818ea2dbf4c3e077b82bf2d68fc41e90b613e6167024c",
    "signature": "0x87105db95bf8688a19f8101e4c6d59d3efc020f68c6244bbc7a3cce3ba5572d85eb53b583b6befad74670bc62c794335542ba321e27864c6e550ffe19a31b8541b",
    "signer": "0x20a821B898F6Cb6BB0E5FB2460eD4225B40Bd68D",
    "userId": "198400104"
  }
}