{
  "manageEntity": {
    "action": "Save",
    "entityId": "1014736520",
    "entityType": "Track",
    "nonce": "0xb66fa68f3948504e56e7f16270a7b84199c407a55ca3ebe9970f43b3170241a5",
    "signature": "0x83e3fb2e0da25d59bfb885f9f425058ffa073ecfd43f8d27663b545a513fe670622ab4ef35d72e48cd0f79583960b31c21ee6cc90b67e34772a90287ca63a2241b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}