{
  "manageEntity": {
    "action": "Update",
    "entityId": "199549318",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x907bded6d3c7e724963bcea49582b740251ec0be8af42755c803413d4722f776",
    "signature": "0x0a8ec584efaeb28f840f3ab9951f9009927adf0205e21ad535549d4fac0c70e10d2d9e5b7dff9a638b55758c24638fa60434a859e66b1d1be47cd38f5fa4644a1c",
    "signer": "0x07d7a46761dB78DC1d68D03aCD251A2800940A5b",
    "userId": "199549318"
  }
}