{
  "manageEntity": {
    "action": "Save",
    "entityId": "716667186",
    "entityType": "Track",
    "nonce": "0x7d2c47d6d1acdf8e5f91ac73e20081bb768380e2488a30320bd2a05937fbe9ae",
    "signature": "0x8bf40c14931f55fce0cfdd84eb4117e5ecea7e44cc4f61a0012e988c2e509d1427560eb4cc726dc9f88a01d698ba88443dee66bb53941d86ede8848a34b8aecd1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}