{
  "manageEntity": {
    "action": "Save",
    "entityId": "486617387",
    "entityType": "Track",
    "nonce": "0xdd13e57c6551fa6f2297a662146736a455aa796af4b0bc61d2581af8d2111ef9",
    "signature": "0x2b3bf2f66560d781a93dc0278499c823786488da3eaf392c6acb508e6f1e19c05b786d5522844d4a8e1c2b4e82c3d707fa101c11d8e33e24d512f32d9b69ea101c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}