{
  "manageEntity": {
    "action": "Save",
    "entityId": "1627392988",
    "entityType": "Track",
    "nonce": "0x8f5047a447b7fa670559f9c419fc28042f43fde67f5b9ea6286dbce9030db9f3",
    "signature": "0xd817c2290704b0820888b375ddcbdf0a0b530aa5949acd17b41ea14d0e4ab55a01ef6a55daa9300b407949f19c1212e93702544c0130705213258404554b20f41b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}