{
  "manageEntity": {
    "action": "Save",
    "entityId": "67695386",
    "entityType": "Track",
    "nonce": "0xf0279ec3bc258b481eef9f1db898c107ff8803d9e5238a761e030080acceed91",
    "signature": "0x0d9f46a0f3af8c48b18a465ba4fa2fa8d880ecab12465b7fe9e8d8344c361ea668ef9aab00e7d2ab57066ad6009acead961fae6766e75dbb10ae4b93bb001fd61b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}