{
  "manageEntity": {
    "action": "Save",
    "entityId": "1098349710",
    "entityType": "Track",
    "nonce": "0x8dbdb41401a2161abc993f00d82be527b2e404599e379472a97acaff1c216710",
    "signature": "0x28a5d5318966dad651d3018176dbc3fab863bc8628ec04eaf83f55d0d02b6d7509189f06ff5c36be597a9e53f36903f328fd16764357abebf30ee66e7af89c131b",
    "signer": "0x5eEC6e5F299d4cb6e84CEC4acbE11AD1037DD381",
    "userId": "363967944"
  }
}