{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837777538",
    "entityType": "User",
    "nonce": "0xe1f1579bec0fdc006b8bac21bb15e35674f6ddd64c82fd0822454ae37c9d78ed",
    "signature": "0x101dbadd246dec1fe17d1e5724bc0ae631853c2be36befd7d52fd8e3d2b8b3dc55cffe215020b3e3a9af45bb32eefd0ef76124277c1bf7083e2e47a44060a8731b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}