{
  "manageEntity": {
    "action": "Update",
    "entityId": "392289893",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralfkzmx3rnnyibrk56knh2t6p6a3wdy5ndh5dbj4uakkw6vyjc6va\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1839215861}]}}}",
    "nonce": "0xa4db3e67f749cd2c02fcc5bd3b7108112b7131c35491cb58f3a6fdaa4a4f0011",
    "signature": "0xa7cab02f0ca3f89fc08ba6529b3ce911c6a03272242b46c18a0f2dd8aa7df32226252a71b524663c358002925ea814469bff39ccedb2f170bc0db8aa8f81fc9e1c",
    "signer": "0x8bD50Caf0D290982E2705EBe89ED8fDCA620224a",
    "userId": "392289893"
  }
}