{
  "manageEntity": {
    "action": "Save",
    "entityId": "827769655",
    "entityType": "Track",
    "nonce": "0x399018696033d81ac40758e2e1ecab3997b73632f2d0f8f6ad3b18a39d75b1d0",
    "signature": "0xb0cc12d65bb42ca0e24c0b01299c719ce27a702990837d20fe9563f3d3dde4271c0d063e1c7d52f3539be9671ea383fdc122861f22a2b0cfa4a01d616197eb981c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}