{
  "manageEntity": {
    "action": "Save",
    "entityId": "180013320",
    "entityType": "Track",
    "nonce": "0xe2ccf65e0c0e3ca1660cced0ccf978be8e5bc123d42e74039c17fe92dad17ac8",
    "signature": "0x6f9fa5bec84ef95a6254dbe4e6e2024cfe69e497410c4ab1def25c78e583be4231ddf69eedaaba115d0926c54d5867cc7b0071cdee5864e76ec9557e3022a28c1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}