{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334948",
    "entityType": "User",
    "nonce": "0xd6cc424cc0a9677da2fa7c6fb6556d47b6c42a426d8d76bf69bef9a43fb0cc54",
    "signature": "0xfcf7e1d042f107a4bd87a13e545ce1d9f1eca76f5d4c7955489153d254c76053112836cbd62f2b4f735b924dfd7daf179e8ec26beece8ad95adfb67be4922c6e1b",
    "signer": "0x7153827aB581A5a4289E37ff776a53d3E839Bff0",
    "userId": "937198665"
  }
}