{
  "manageEntity": {
    "action": "Update",
    "entityId": "56498691",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2cb0f6edd64ab22915a6df7cbf85c87297fba1b01245364a1bd627d5b6feed01",
    "signature": "0x9a8b7428b1c821c0b1e0fb9b7d4929f5f137eb1b9cd6c375972619f2c8ef30f81cb58572cd149f34c659d624678de8a277cc3f457ee9c267894509c91f06d2d91b",
    "signer": "0x499c4F2ACAF1db2C5bB1cD2764E83bf0A2C676e1",
    "userId": "56498691"
  }
}