{
  "manageEntity": {
    "action": "Save",
    "entityId": "2111356779",
    "entityType": "Track",
    "nonce": "0xb36bf0d64782f89a811525f7187dd74ba48b0608e1f4c62e992cf4662e663531",
    "signature": "0x62c9c5470036656472d3c2d73a783ffa419f6deb10d0441bfe2e2f75240fa235745d1b51fb395c44190c3ebdc105904192cd2522ac150893778170b9e02a48471b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}