{
  "manageEntity": {
    "action": "Save",
    "entityId": "1113306",
    "entityType": "Track",
    "nonce": "0xf6016ab03a9afe1344de10b33e824879f919dfb9e0f0a349a8e95b88c4e2624a",
    "signature": "0x36df1a36e774d41730adc19715df115081c13063dbb4b8eb57ff7b1854b8ff2657ec393a7b250a495d876e8f91d939f085fae5c493438a2169a66ac25c53e81b1c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}