{
  "manageEntity": {
    "action": "Save",
    "entityId": "1598715206",
    "entityType": "Track",
    "nonce": "0xab44b6ecd21a9f21fe1648a7ea111b87599798ebc9735a2ad268745dc1ba071b",
    "signature": "0xf58e8c335ea820385554feb9a3e7e8c901f7276b827f6166733bdd92384902ce65df1e2a2a13b227e0cdadcedebad0f11eda22961b382e1284d719ee216bf2361c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}