{
  "manageEntity": {
    "action": "Update",
    "entityId": "75683930",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x20b445896dbc328287754d70e7047b210e731f5e4dbe6953225fa50ca149978b",
    "signature": "0x9593a4ad70366eed3868a26c9da72a7d854da94f0f0d907fa146138be6c38c0d4ab2c14bbeaf2222c54491dbc5820ec05ea68773fcb20595c2b1219ca32c28a11c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}