{
  "manageEntity": {
    "action": "Update",
    "entityId": "149862782",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcbbc4ecdb9c07d92eedfb2445f2abb0ff1320370e247b2efe94ca96dfc4dea88",
    "signature": "0x571f1894f5fbc9bea902f0b8a387a3a5b265572969e258b2fd57b9141512da777b90d9ca3c2f5c6e586b0429c1b96da9b162adb072c37ca2e41bef11ea68d1be1c",
    "signer": "0x82f4323A977456669C7a058d66da34142E3A7355",
    "userId": "149862782"
  }
}