{
  "manageEntity": {
    "action": "Update",
    "entityId": "290918283",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb2f3a8fb4d49ad9479b76adde3fe042ebcee4c611314c997cc91309850267128",
    "signature": "0xe933e1b25c4d6f8514355167b9c5d405afc3299edb5419a85e0eccd2e1a8d47e325daad390c2635f9eeec332f550d1b73f702143028814433e78055c38f9c65e1b",
    "signer": "0x8ed8490C74f2ed2F9d4EFDAe961373276dEa8f0a",
    "userId": "290918283"
  }
}