{
  "manageEntity": {
    "action": "Save",
    "entityId": "1706174613",
    "entityType": "Track",
    "nonce": "1792355861132834411",
    "signature": "0x6ca3fcfe4fc895f3da0eb93b791830c5a4d38cd975301e0dcbd96797cecc38f46e1b908d973aa83d147ecd09b0f19ace3cfa5ebd66ca62f8c3a9f7d3d1e88ad01c",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}