{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x5b4395754f105c3392106da85224f81f57681f15a48347e739157e6699b081c9",
    "signature": "0x681f2ff583d93f9968a5d0e23ff78e3beecf0975f22d60ad4bdbe8855c1816027b5efc73f0bf0a484e91887f31d92c46f50f65a793f1b7506aee006572fc44bb1b",
    "signer": "0x12705C8Fe8CE886CeFEFa0d4d46E906f2c35C954",
    "userId": "477934274"
  }
}