{
  "manageEntity": {
    "action": "Update",
    "entityId": "168139737",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe4c0f1e42b997485ba6c5b24e100f7e2df3122ccebe3a4c469b3fe3475a0b585",
    "signature": "0x4a9ed22ed3969b6592619c32319715e1a6c80142979d6410d4663010483e392c7f96fad0f92ece787fb2758a52f683eaa0531f06c09b443be6ba35a507c4bade1b",
    "signer": "0xFc088F13d4a1Ac06F16750acE28481185Dc8c881",
    "userId": "168139737"
  }
}