{
  "manageEntity": {
    "action": "Save",
    "entityId": "107365",
    "entityType": "Track",
    "nonce": "0x66713ea47924a88614844a1ce4984cc0d94ba9580bd25e0870e5682f5ddb82d2",
    "signature": "0x3739088aac683349e82063dedabc3ed925b263480a32ff42a3f819f54cb14dd37c83c1cdbfa36684f5b85bd2a6d21ab2c060cd2b44f354a9144f18d649de4aed1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}