{
  "manageEntity": {
    "action": "Update",
    "entityId": "193733863",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1544985b0e6d3d319cc6c9b817f684801bc818648fdf4211c1e1f33b1fbcebcf",
    "signature": "0x5275496c875261b44faf53dc9986b6e419b6eacab576439a17ab9124d2e9ff145ca0ed1a6c5ec895e1e3dd246ffcb1619b9abdda502603356ee5f9645f970b811b",
    "signer": "0x2488A83c71384c84eB9fA77D73306dC024EB3B02",
    "userId": "193733863"
  }
}