{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0xd842c07f468106eab52e8632649a5bc2d3153b8a17a2cdc9d85aeaea24d036f7",
    "signature": "0xcce0ec44536b61437a79e17e10117cd0b8b766de9c09e999e791090644a94afe05a2317a65d526cdd6ce2d5e6b44d2343fe6400e23745f8cc3452dc52b5ef5201b",
    "signer": "0x745895918A1926af8a7B4C34Af51BdF98bf5C7C8",
    "userId": "54958731"
  }
}