{
  "manageEntity": {
    "action": "Update",
    "entityId": "43686465",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranuzlggqlqgmjlvfca2dnhmxatm4d2czv5345uyo5zubblbh6l2eq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":656389962},{\"type\":\"playlist\",\"playlist_id\":177900499}]}}}",
    "nonce": "0x9cb80d7631dd4ba41f6fa0c3eed675ce600dc08d0cbe2dcf2ec52aa28a98aaf7",
    "signature": "0x7025736f42bf2d990497595720c5844465b0064d2f9524c535fef8d14c44952f0805fec81b7cb78eb10557c3e9fab4fd32101bd56370e03083153ee675f1f8491c",
    "signer": "0xe6896f375EfDD7aE22ea0E0958a36f1Ac1861a95",
    "userId": "43686465"
  }
}