{
  "manageEntity": {
    "action": "Save",
    "entityId": "147380704",
    "entityType": "Track",
    "nonce": "0x6a037758c55155472ec9aea0bc58749ed7ce31c0ea8ffa1794e774fa001a427f",
    "signature": "0x4186698e3e9725a0501fd994efc9f51f2ed66975c01ec84cf55cb6d78c5fad3735184a5f0e277a490c2b7a8f76195a701622102ee8c15a5b23a1f1fd7908750e1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}