{
  "manageEntity": {
    "action": "Update",
    "entityId": "957487527",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa47582609024d9cdb501a2a0d3781c76b1cf52fa7c9b8f830f99204ef6adc0da",
    "signature": "0x903fc70f72c88ed39c8b451570e1344455a34523008b224e94cc72108593acf418e8f72eab950043c7348b8b15ef5bd4da959fe8ad04fc1e60421d4b7953b37c1b",
    "signer": "0x52BAA98ee831ee3079B246db314335Caf4c7EDFB",
    "userId": "957487527"
  }
}