{
  "manageEntity": {
    "action": "Save",
    "entityId": "1531369466",
    "entityType": "Track",
    "nonce": "0x7486f297eadcf32c4b3879fa874fa321e59c1f8cd35ce8a25daf84577debb229",
    "signature": "0x927d47bc66d4c1152fabd7a37f8a0939b20c4e4de2559f080e2610f887a5121c2ea3410b267cddf62ce7d74d0c57b45419a1b15ab48842f2fb9609db058ca7131b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}