{
  "manageEntity": {
    "action": "Save",
    "entityId": "214779",
    "entityType": "Track",
    "nonce": "0xaee184acbe563c63f771d6a645c36bec4bf848f97de1116a9a78cb1e0095fab9",
    "signature": "0xcf9117775c2a9974a6563c7f588ee2665b6d668add5c9622d8aae22762a09c5d49fb6e196c2c427a1d12d54b48f3769d089c2fade122fcf90179c8bc9880f0ad1c",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}