{
  "manageEntity": {
    "action": "Save",
    "entityId": "1019848270",
    "entityType": "Track",
    "nonce": "0x3726d429a4bd8daf9a8bac3ac63b2d98ba07e33484bbce7db1410fd769fca31e",
    "signature": "0xaa0447c0f6905bbbb0fb324b529941a970ca31e2cc7956501170a1b9d4902feb34c3879a84fb9062df98dd4ba0ec49cc56f22ea71684556a0646619db09773f91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}