{
  "manageEntity": {
    "action": "Update",
    "entityId": "351797811",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd49754274a416036691407149299c737752a67a2f875b066455339774ec2d119",
    "signature": "0xd2ff6d10da662a7b84cb291e69847975b8ef4764117b0e4d2f88fe9217ddbafb59a29531975d9b1b7d57753ad147af26d2f57a2aed11a8e1e3f27a1f486ab8011c",
    "signer": "0x3cB284051537DBb1b75b59048551cfB3e2ce7517",
    "userId": "351797811"
  }
}