{
  "manageEntity": {
    "action": "Update",
    "entityId": "616237734",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc592c2e2efd00a56a7a46f946ce28c7d194867ccd88ef3a1bc00d3ef5d212270",
    "signature": "0x17e319f2cb69b09c664a31e7ff4bddac1f81d18cd93c19ac01196b51b743a30551c6f392ec1189a615811a9fe56c660595b28a1e0cb6f28673b74d3595e18e0f1b",
    "signer": "0x0768E91D0D36720f8378C897B2f8Bd7d1340b80d",
    "userId": "616237734"
  }
}