{
  "manageEntity": {
    "action": "Update",
    "entityId": "373852287",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3b3530155a6bd08d97ccddabf15827ec015cbd1a19546e9f7ad7da3e225f51ee",
    "signature": "0x6a9dd037221d3243eeff42595c0d3b2b01842a9c5ba4c7f800463b90524b51102f5da4305a9dde04eea798452e08b871d0efa3578f1309fcd5243d5527254cc31b",
    "signer": "0xBC09F03e9ceB35166f761B6868d7F12fB98bA711",
    "userId": "373852287"
  }
}