{
  "manageEntity": {
    "action": "Update",
    "entityId": "637705400",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x90f32e07aa3b2efb3b8e35d216b969f96dbc5e6bed31491c57d59daf808a3b3e",
    "signature": "0x9b5351ff900e7b47ba7b5f96a7a98678f893ddb381004f0a61769a2f0df6988f758eb351c7c700463b21dbcf98b969307326f1f106467271bb5059fe0ef5f38f1b",
    "signer": "0x485ACb39F8a8b43df52c225aF4f80e3f262fD24E",
    "userId": "637705400"
  }
}