{
  "manageEntity": {
    "action": "Update",
    "entityId": "154257245",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7d302b3d5b3a533fd0e38405713f265ba498620d2de7477aadfbc6f4978f584c",
    "signature": "0x9e4385775255285956983bd49872d3fe512b120c283471918db6ff4a44d8d9fa79006f46652ed05985b04b291d1c262e0f9e9e54c078141304056c6bf625681d1c",
    "signer": "0x3626dae0590BB70062aE7BF2c3E74B8677Fb66CB",
    "userId": "154257245"
  }
}