{
  "manageEntity": {
    "action": "Update",
    "entityId": "601396677",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbeb29fbbce2c77ea387dcf0bd73093bc3691bbabbdbf57dda32efaed8a147671",
    "signature": "0x4610f650dac9041e6a797ab2a1f6ce5d2821f389a7c297848daa71ab938c78783a17b1105efd0f5f8864fa7939b134e2638abf3f721c0bd31f251112869a6a481c",
    "signer": "0x1357C975771Bd93b642d21c48Ef731f652C4033B",
    "userId": "601396677"
  }
}