{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348098",
    "entityType": "User",
    "nonce": "0x307a51ac490d87b3ab48e05d226b06f9047756e8189d0f86bc354324b9a42a1f",
    "signature": "0x4a8e12e285fee249c3e420e7cdbee7132a84c7af4ff50bc1eef2d49fd20b4a400441e177519a3d0966f81ee3cf51507e89365a23874b6440d0c03c9ff7e5ec771c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}