{
  "manageEntity": {
    "action": "Update",
    "entityId": "659417475",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xffae0fc32997e22707ef11240d07b16dbfb551ed4ce3321750e0e77d2647439c",
    "signature": "0xaadc8a57bac0f0fd0286c001771e6022cee227a02cf89f9d6d8d1297e1878acc4c780789e2263bff484454d6c860ef0e89990efe78eeb1d0fff7ce9a656bc7eb1c",
    "signer": "0x491B54C53C6cD2140A4Fc8C48EB78E19daA57eeB",
    "userId": "659417475"
  }
}