{
  "manageEntity": {
    "action": "Save",
    "entityId": "274316047",
    "entityType": "Track",
    "nonce": "1791565230368034512",
    "signature": "0xa740fd6c26865d70f1a95f92bbcde34635b7bc35463b96f5e091245c3f5778a5796c26fc90b2e5aba58d4014428c97f74bd43ff15f27b4edd46509aaed3f91641b",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}