{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102143",
    "entityType": "User",
    "nonce": "0xaadd37c6da615f1d54cdf9ee9399d97fd2ae35520dace14467d9fc2156a5c7c7",
    "signature": "0x2f4d080cbf1b60d9b22f2351c35bea945a524db1131173b1729c86bceae173232f7d7d4df2de6d7e3326a16688ea24e0b64faa298f85bbb48a9de1528232db001b",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}