{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900423820",
    "entityType": "User",
    "nonce": "0xb1db910b6c1ba095c2228520e8be04fd77ad3bd1bfc4113feb3cf9420fba8b66",
    "signature": "0x5e60174d3694c1e9a775b18407ae83bdc718042e129cc3172405ee55d1cc4c0932d6889940e6b0a58a04ed631d7fcc40f9597cf21a5b848cb5f56db74221cf791b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}