{
  "manageEntity": {
    "action": "Save",
    "entityId": "893473234",
    "entityType": "Track",
    "nonce": "0x2770137f3446427344163c8bf748029bf6f236a52a22468b86f83e30fd4fb5ca",
    "signature": "0x53ae47c1cbf6db4861f525254d5d664d74afd4b57e79f401e25537d9347e953b20449eb90c7e8c9906f54af31bd8d47d842b7c920c070501e507ca3efcd301c01b",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}