{
  "manageEntity": {
    "action": "Save",
    "entityId": "460113499",
    "entityType": "Track",
    "nonce": "0x93cf393442013bcc8493787d423fcd835275a2c64f7fd9f523ba4b505df78b1c",
    "signature": "0xf79a67efdf9a2f9042da70611a021487da67602fbdf6674cc8dfc97286ee43f2271e6896395b49faa38d7866d63cbd5a4e9b252b2ae51d4553f9269f9a27c9a91b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}