{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753712",
    "entityType": "User",
    "nonce": "0x699420c2fb7e2bf3316270d07ac11b6eaf7b4bd4bd66d17ef9163f0e98eda183",
    "signature": "0x2b9201f4a1e3c1860cca6c4349e1dbeecf1f8efba7d0d1ad79ea2bfc834fd2743f01bf47e6bb84453fabf132d1bf18196e5ec47c3adb019281150c6266fa1ea31c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}