{
  "manageEntity": {
    "action": "Save",
    "entityId": "1417069197",
    "entityType": "Track",
    "nonce": "0xa5972283e7bbdc2c599ee1ed816f8714a69e2b059672aec87354dcf6cf6f6dd3",
    "signature": "0x0d643deedbb6a8e7eecbd23573a339014dac76a304ecb14c0a1fb27101e383df376c956059f657acc2fad684584f4682126ff4490d9c32651f9e73f71f0d64321c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}