{
  "manageEntity": {
    "action": "Save",
    "entityId": "1103193968",
    "entityType": "Track",
    "nonce": "0x2e92c1e3affbc513999d8000f56f9175888bb180137e1121b15a8b1162c63517",
    "signature": "0x01ef4121d97434855f5706b5eccdfce1da707ed4c52d8fd59a01f446c062ebe460ae3ca126089cc3644fb54098be035dcc6b9ecbaa8277c09b53ce97ab1784641b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}