{
  "manageEntity": {
    "action": "Update",
    "entityId": "407046354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6750dbfd8d25a08335a70f41d484e182cfce1da9a1864e9ce09e9ec01ea68a1a",
    "signature": "0xcb74edd9c4865036ce893ae8eedd76b43416769b69dacd61564fce26d84f51ad61892f192b15f83d4dc72a91896e90ecd2c533450d134447715da51ddec45af11c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}