{
  "manageEntity": {
    "action": "Save",
    "entityId": "259665082",
    "entityType": "Track",
    "nonce": "0x4c27df9ee6dd19629d13f86561d7ca8e7a2fa49e8799b3bb7afc3413de5f2015",
    "signature": "0x714957296e5150fa17ff4497e15315877c873608559eff7407bc9927357d9c7f3eb1796339d47510fdddfd90afa3e22dc9ee6fa4c51e2d3d6e5a1520694acba31b",
    "signer": "0x4dafC3e774A1033C5604372f17ccBDcE545f478D",
    "userId": "889450527"
  }
}