{
  "manageEntity": {
    "action": "Update",
    "entityId": "579726392",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraz3ncuo45ahptsunt5nnlrbesmzf73xna6byzxugslegnk3cx6u6a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":147488032},{\"type\":\"playlist\",\"playlist_id\":305796788},{\"type\":\"playlist\",\"playlist_id\":974101746},{\"type\":\"playlist\",\"playlist_id\":1101270933},{\"type\":\"playlist\",\"playlist_id\":477711630}]}}}",
    "nonce": "0x3c929de38e23588d144d2202b4c241ada0b74a4f58759e77cf45a6e12b1ae701",
    "signature": "0x1dc9e29459c15d452987fa05c69ebbfedc4c2b761f4d25b35a07d11445f83bcf1392af2f7ab60c046d5ed3662f6f1b678b43bca24fe534ee527ea240791d904a1b",
    "signer": "0x9D360ECE27645E249fbb45fC03AeF953A81031Dc",
    "userId": "579726392"
  }
}