{
  "manageEntity": {
    "action": "Save",
    "entityId": "160005159",
    "entityType": "Track",
    "nonce": "0xa103d67c5f7fd746029343dec920a7639c70eca9f4b72e20a4abd3f367a5c3b6",
    "signature": "0x0dfbcaae126f47a34253ae4ec3549d434cf3d4ea4251105b57db8016f837786430d56356a5225bc1d8fbfb05f16ddfecafce23332fad00823d292263b1f019c31b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}