{
  "manageEntity": {
    "action": "Update",
    "entityId": "514261965",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1f606e039a418fdafb9540d92f0d89993b98c37a085d7091cf865f3371f7d79f",
    "signature": "0x4b04bd36ddcce795cd55b95c0eacca6442dd4e2ea7714d3d588ff1827a0de26f4b96dbdbe780472002ab4815772a43e4963b26ad525fdaf7d72bd321d2c868eb1c",
    "signer": "0xCEb3315f3A11ef494F33B40dE3541224635532Ba",
    "userId": "514261965"
  }
}