{
  "manageEntity": {
    "action": "Save",
    "entityId": "2074067434",
    "entityType": "Track",
    "nonce": "0x6176515d4ee521128fc8a737304137c50577437f0e6f3584e0fe7dcc45a573c8",
    "signature": "0x6240ae2549720414ee3d235fc7c2d8d176aedec4e9c4ac222fd4b160b10975d472ad194ed20236f2691cc160d9073592fa38b4253e8410426685cb2c5b5677101b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}