{
  "manageEntity": {
    "action": "Save",
    "entityId": "314805081",
    "entityType": "Track",
    "nonce": "0x5e2b2a054f7b7c5e25c0c7957c5701b49f3bd4d51074d1b63d6ee44381b37efd",
    "signature": "0x84cac36fd8d92bc2d87516b04868b45dc2a674618d3c8ea124ca32a96e7568a273b00c84d0e8a4a3e9ece76f4eea7170981b78e0dcbe722cdfc102116fb6e44c1b",
    "signer": "0xCDa375200575E30227163D9E606beB0e587ce854",
    "userId": "408678644"
  }
}