{
  "manageEntity": {
    "action": "Update",
    "entityId": "941343958",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2d6202cca59da418ebe237b9d83eaeedfa23b04579b307510e921952a0a359bd",
    "signature": "0x4b9a63fa6f06cfd9e2860de509bdf85bb29039c31a5ec76508baf2192a65ee2824941b7aa67f2f620bf9f813849315fc6752f02f06113f0a0bc6ba329a28eb0c1b",
    "signer": "0x9E576B822F4873B0aEc2E4D46715EeB5fB00936f",
    "userId": "941343958"
  }
}