{
  "manageEntity": {
    "action": "Save",
    "entityId": "1926254858",
    "entityType": "Track",
    "nonce": "0x69f260111b494172132c0fa1d29804504b1370cf88f40f8be643ee04782adb8a",
    "signature": "0x8fe9bad628ea2f8d794772b55d77fe1d3d29c0c9740f6ef16ef69c7edb9d18544d255267e59c974b6067f5e295f93fb20207750c703154c91509a13db867c50b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}