{
  "manageEntity": {
    "action": "Save",
    "entityId": "1231769075",
    "entityType": "Track",
    "nonce": "0x4f10f0dff79cfd49bc90d5981a9994b747300fbccab9925b8e73bf3764d0c05b",
    "signature": "0x9f8dc4334d8675827391b162a6c4b1721e6d5c6741c9f62ca08b85591793693d45463698fa0fc8f350c9e758b03d6e1887c766129a43789095da3f1f06e4636e1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}