{
  "manageEntity": {
    "action": "Update",
    "entityId": "554920508",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x02e3ecaaf5992c0ef1e5f9250dbd0df10c51883ffef14222c2d9eb9e2949df61",
    "signature": "0x952dc2af2c89f8d7ff44375bc954c853b33c44cd6f9959b04e72fb606f3b1ca163e98a02eb9f96a6e9f4aadedf41ea0a744994f63d7a94f0d68a4e014276b0401b",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}