{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf4a2d3cb59534023f8c43b50ac72413cfc874f7d167bd6cc6ecf95f5e1d53968",
    "signature": "0xc20059268143458bb49ba9b0efa2ac5a183d175c7265978d0d8869a05dc9f06514f9a15d18ef7745dffbaf12ea27ad30092942ca4b9804dd0d8202b203aa58981b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}