{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1883134",
    "entityType": "User",
    "nonce": "0xd937b8c6a0bf89bdfee7dcc82c474a916d6b3143fa7b5e460446853bd12f7eec",
    "signature": "0x6d2ceea3a11d7d41efaf28d5e6a507dc3d30057b61beecc1774036030a3764831824cf0efd6c1a1b78ff473f447fb6572dbcc692065e204411c46d35863615061c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}