{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xc9a9708d3fdfb2301a392d7190d57cb42a35579d5e5d7fdaf889f99d176453fe",
    "signature": "0x0696d6aeb7340557a9992dc5aa0e07a7dc0d6394f7879d180f7c00d7c71b95c82faa4e14c39a60ad5fa94506de2f02b5b5f4faeb201a01fc919ea3528118fef11c",
    "signer": "0xa994b8dF5782f9A03370955CD9107820F30cD6Ca",
    "userId": "283342965"
  }
}