{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116360865",
    "entityType": "Track",
    "nonce": "0x2b67d8d575e7a255b2f0b9514fd44afbaf786e561359bab58edf0b057a8da136",
    "signature": "0x3be8820a409cc11b77b59f8f3ce220e7d1e5571c3421e22155c60a9703dc3b5b4e35236af7754280c908b01ecd34528b42400462125cd80dccb9bce9b01138501c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}