{
  "manageEntity": {
    "action": "Save",
    "entityId": "716079225",
    "entityType": "Track",
    "nonce": "0x81d465535939fdf30c5519ada16db9b8fd392bd6ec1164abc57fb0429cf052b8",
    "signature": "0xfb6029e15ff2513c66abd61ae2a0534c997c0ab73d343ebf91b1af350a5ad7ec7cfa086d515aac57294476327842068085706acaa0142c03dbf08db6faafa0391b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}