{
  "manageEntity": {
    "action": "Save",
    "entityId": "1367304042",
    "entityType": "Track",
    "nonce": "0x438f6944e21ad70e8a0386836071c570b69223384ab0af94b5dc07d3f9cbf1f4",
    "signature": "0x07031d3b50b9843ffa7371d61e6f89cddb2bf000b0371725b714b16857f550043166c131646d7951cafcef7d685eb53f81b8a709e05b77caeb1d5e16e7fd29a21c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}