{
  "manageEntity": {
    "action": "Update",
    "entityId": "540193249",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3adc871865c8d58dbe7d89a49a446518ba7794980281883627eca8aa5064bf07",
    "signature": "0x6899992f9be0f00e6fe91b131b6e05acfa099a6803365461fafa3d73dd1d39111f71574da1026a7fdb5f02b63603cd4be29584d160af66977b3e7f16b62d4af71c",
    "signer": "0x10c1827D9F8a86fefB7be73e50c5492e38A43560",
    "userId": "540193249"
  }
}