{
  "manageEntity": {
    "action": "Save",
    "entityId": "15236532",
    "entityType": "Track",
    "nonce": "0xb2b518d0e23fabaea8d6279592ad4da585ce2cb283e712ea724067e8a5340a8c",
    "signature": "0x8cf4feda01749f5737a451056aa39292ebd088e23b2170331dfebb2beb8db2f52647d5c8bcf8a24a162e31530f1efb82690e047e0930718ac822ab0a5a4f091a1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}