{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0xc62df1e40f13a7763273f35ff7a3855c2534ffcb0fb7aad853c893c10deac90e",
    "signature": "0xdb77fefb7340f1eaf9042494434ec0bc8169c19ace817e1cb3d56f8b600478237a77a11e5068bac41e04bf34cfacb420b391e2979d4f179224039dc75c6129f41c",
    "signer": "0x8FF85C5AA450a88f13FbD5170e24E2a3eFF32518",
    "userId": "311829956"
  }
}