{
  "manageEntity": {
    "action": "Update",
    "entityId": "144391872",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x097914f7717fe5be99816e049412999b01ab4573293b897b7425a38cb821f02e",
    "signature": "0x05a1c6c36d1867d40d98562446d4d7618ede46e5ebcf46aba5daa29aaefe8cf843ff28a8683665c72b8bdf6b6a6fe98e0afff2aea51c447c00031e8abc254f511c",
    "signer": "0x7aC3F85502f0Ec15A2fb724d48947F89da8a99b8",
    "userId": "144391872"
  }
}