{
  "manageEntity": {
    "action": "Save",
    "entityId": "1798088080",
    "entityType": "Track",
    "nonce": "0xb7595a3bceb2c2f00f74ae858caa6cadf7b4e4954287e4a659dbf946e4b99192",
    "signature": "0x37a0ee28810a4abec138bfcaa42b6527db7f98738ad0245a2a2405ce9306bb455152e4f56be5c8a739ede6ad6f22802e54ac2de2c91b4629a5d6ff96cfd991651b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}