{
  "manageEntity": {
    "action": "Update",
    "entityId": "393411353",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5e8a343a71e1520150ed328bc88a5db3b917f41088180a3e89e5dd2da159ae7a",
    "signature": "0xcea8a429ed5c35b5627726432628a9bda4431f6ebc4e2114fc33a0cfc98c040a46cf2a8ef725d54f2aabfdf4c443f8af7e4700351ec22aa18f7905dfbb210e831b",
    "signer": "0x3eB2456E017b5679f587801336BeE9c0Ad251858",
    "userId": "393411353"
  }
}