{
  "manageEntity": {
    "action": "Update",
    "entityId": "211545300",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc4b6446c46f8e45676aee4cd0b3478d546c39fcc55a6c0c73c9bbc55bdbab210",
    "signature": "0x018823b9e1d21f7d1a6554cf7ee98f6d4f8d695cb50af334d8a060be04ac77470341d80015ee7a0181468bf50a84933951c9fd0275859a7edb6d0af063b3b7231c",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}