{
  "manageEntity": {
    "action": "Save",
    "entityId": "276680491",
    "entityType": "Track",
    "nonce": "0x69ac8d436a2cf4ed5eb5dda567688dd3c8d87b4a644fcc80bb27dec9b7ed91b5",
    "signature": "0xf18ca6d05b82c968058d33a7edba74300db4144f64d94b6d9711ab7c44f594480ddfc2bf58a97c51c8726e8918806ef2fc9d705e89af769741388401955204081c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}