{
  "manageEntity": {
    "action": "Save",
    "entityId": "801380",
    "entityType": "Track",
    "nonce": "0x2ed9b23660b5e0a8c5c84d370ba6facaa07baa023ec26fee225de84a322044fa",
    "signature": "0xb0701f56a63a8af5ccb8d7db6ba09e6713be634a4712c11950b8e473cdef63b464ce8e19e5f023cae7348e69eb0eeefc33128656280d6dd9833ee9c6dd33ddd81c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}