{
  "manageEntity": {
    "action": "Update",
    "entityId": "45511108",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xffed92dc6051cd059b4150b35cd36f9105e33858c33ad9fca6d575f7570d5e1c",
    "signature": "0x8343d8884f4065ed25a24b558c233ba431ecddf06fe191a071f69c4b0cc47ca619c1b9add4ae1c66ca6e64ff172f14112416f6b830c7ca163394839579f8a4581c",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}